The Accurate Reloading Forums THE ACCURATE RELOADING.COM FORUMS Guns, Politics, Gunsmithing & Reloading Reloading HELP! to much pressureGo | New | Find | Notify | Tools | Reply | |
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| One of Us |
i can not figure out why I'm getting to much pressure reloading .223 ,blowing out primers cases getting stuck busted extraction claw. started with below min charge. once shot lake city brass,sized to book spec.not taking out to much at primer pocket primers go in good neck tension is at .neck size is .247, I've tried the redding dies with the bushing .245,.246.,.247 can't get pass 22.5 IMR 4064, min @ H335 ,BLC-2, What is going on I've got other rounds loaded (600plus)of 223 ,75gr,68,69,75.shooting a win HV I've got pictures | ||
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Check your powder scale for accuracy! Then double check everything your doing. | |||
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i went to my local pharmacy had some items weight ,scales are good digital too is cal | |||
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duh! how do you put pics on this forum | |||
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Open a photo bucket account, free, and put your pictures there. Then click on the bottom link (there will be 4) and copy them. Paste them here on AR. It is simpler than my explanation. | |||
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one of us |
Are your bullets seated into the lands? Frank "I don't know what there is about buffalo that frightens me so.....He looks like he hates you personally. He looks like you owe him money." - Robert Ruark, Horn of the Hunter, 1953 NRA Life, SAF Life, CRPA Life, DRSS lite | |||
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all of the minimum loads showing pressure is an indication your rifle is the issue not the ammo. | |||
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How does it behave with factory ammo? | |||
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There are many factors that can cause problems Powder scale is FUBAR or way out of calibration. Who's scale are you using? What load are you using? How far up the case is the charge? What primer? Who's bullet? Bullet weight? Rifling twist? ( if 1:7 and you are using 1:12 or 1:9 loads you can get into trouble) Over all length of loaded cartridge" Who barrel? What chamber? Bullet diameter for REAL-measure it,don't rely on what the box says. How long are your cases? Gulf of Tonkin Yacht Club NRA Endowment Member President NM MILSURPS | |||
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If factory ammo gives problems, make a chamber cast with cerrosafe | |||
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Please no. Just no, they are so terrible. Try postimg.org or about 50 others. RE your pressure, what speeds are you getting? If you have a tight bore then you might see pressure with lower charge weights. If speeds are where you want them then stick with low charges. If not, you can try some slower powder. Is the bore clean? If it has some severe fouling that could be a factor. | |||
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If you are using a magnum primer change to non magnum.I have seen where guys use magnum primers because they are harder and blow off their extractors.CCI makes primers for AR`s. | |||
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Check the bullets. Are you using the right ones or are you using heavier ones by mistake. Check case length. Are they trimmed or too long? Lon cases will get pinched at the throat and result in pressure spike. Have you fired safe reloads in that particular rifle before? "When the wind stops....start rowing. When the wind starts, get the sail up quick." | |||
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| Administrator |
We still do not know what rifle is being used. I have had a BRNO 243 with a very tight bore, that did exactly as this one is doing. That one had a .239 groove diameter instead of .243. | |||
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Wow! Sorry to OP to highjack. Which era of Brno / CZ Saeed? | |||
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| Administrator |
This was sometimes in the 70's. | |||
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i used a Hornady OAL gauge , off the lands and grooves | |||
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factory ammo no problem ,my other rounds i reloaded shoot great ,69,75,60 68,grains | |||
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thanks | |||
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if that is the case my AR is bad and my winchester HV both have bad chambers | |||
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case length is good (2.750) i just purchased a redding FL,bushing die ,s type got the .245,.246..247. it can not be neck tension | |||
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no mag primers CCI,BR primers, some winchester | |||
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loads started @BLC-2,22.5 good ,22.7 blew primer,H335 started @22.2@22.4 blew blew primer , IMR 4064 stared @22.0blew out@22.4 max 24.0 using Hornady 9th ed GOT 50th ed too and lyman 50th | |||
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OK, you say you are using Lake City military brass. Military brass can have up to ten percent less internal case volume than commercial. Starting loads in manuals are for commercial brass. You would need to lower your starting loads at least 10% below that. Little bitty cartridges like .222 and .223 are very sensitive to even a .1 grain variance. | |||
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done that stared with H335@22.0did not get passed 22.4is it normal not to get passed 22.2grs blc-2 blew primer @22.7 with lake city brassRCBS pocket swagger hand held primer stop using auto primer,2thou of neck tension,no crimp,i need to get a crono to see what FPS i getting with those low powder loads , I'm going to try some VARGET and BENCHMARK | |||
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With the heavy, long bearing surface bullets you say you are using the starting load should be closer to 20 grains with a guessed max around 22.5, using the LC brass. Yes, I'd get a chrono and see where you are at. Just because a manual lists start and max loads doesn't mean they are in stone for a given caliber. You have to do what is safe. I'm guessing you will find out you are achieving targeted velocities. | |||
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well i came to a conclusion today ,after reloading and pulling bullets and reloading ,BLC-2 and H355 does not work good with lake city brass, after all that loaded up some rounds with some varget .for some reason i got up too 24.5gr no problem .i reckon h335and BLC-2 are not compatable with 68gr and 75gr bullets those other two powders i could not get passed 22.0gr with lake city brass.i will try blc and H335 with klighter bullets. | |||
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I'm going to try that ,get a crono and see where i stand at with H335 @ 22.0gr plus some...i also got FC brass i will try.. military brass vs civilian brass right…thanks | |||
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thanks … i am able to use 24.3gr of VARGET but not near that much with H335 or BLC-2 in lake city brass.. | |||
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Did you check your die set up with a case gauge? Sounds like the shoulder might be set back too far- headspace issues... if its a bushing die, might need a different set up than your regular dies. | |||
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